2 * Copyright (c) 1997, 1998 Doug Rabson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/sys/bus_private.h,v 1.11.2.2 2000/08/03 00:25:22 peter Exp $
27 * $DragonFly: src/sys/sys/bus_private.h,v 1.6 2004/04/15 13:31:41 joerg Exp $
30 #ifndef _SYS_BUS_PRIVATE_H_
31 #define _SYS_BUS_PRIVATE_H_
36 * Used to attach drivers to devclasses.
38 typedef struct driverlink *driverlink_t;
41 TAILQ_ENTRY(driverlink) link; /* list of drivers in devclass */
45 * Forward declarations
47 typedef TAILQ_HEAD(devclass_list, devclass) devclass_list_t;
48 typedef TAILQ_HEAD(driver_list, driverlink) driver_list_t;
49 typedef TAILQ_HEAD(device_list, device) device_list_t;
52 TAILQ_ENTRY(devclass) link;
53 devclass_t parent; /* parent in devclass hierarchy */
54 driver_list_t drivers; /* bus devclasses store drivers for bus */
56 device_t *devices; /* array of devices indexed by unit */
57 int maxunit; /* size of devices array */
61 * Resources from config(8).
64 RES_INT, RES_STRING, RES_LONG
67 struct config_resource {
77 struct config_device {
78 char *name; /* e.g. "lpt", "wdc" etc */
81 struct config_resource *resources;
85 * Implementation of device.
89 * A device is a kernel object. The first field must be the
90 * current ops table for the object.
97 TAILQ_ENTRY(device) link; /* list of devices in parent */
99 device_list_t children; /* list of subordinate devices */
102 * Details of this device.
105 devclass_t devclass; /* device class which we are in */
107 char* nameunit; /* name+unit e.g. foodev0 */
108 char* desc; /* driver specific description */
109 int busy; /* count of calls to device_busy() */
110 device_state_t state;
111 uint32_t devflags; /* api level flags for device_get_flags() */
113 #define DF_ENABLED 0x0001 /* device should be probed/attached */
114 #define DF_FIXEDCLASS 0x0002 /* devclass specified at create time */
115 #define DF_WILDCARD 0x0004 /* unit was originally wildcard */
116 #define DF_DESCMALLOCED 0x0008 /* description was malloced */
117 #define DF_QUIET 0x0010 /* don't print verbose attach message */
118 #define DF_DONENOMATCH 0x0020 /* don't execute DEVICE_NOMATCH again */
119 #define DF_EXTERNALSOFTC 0x0040 /* softc not allocated by us */
120 u_char order; /* order from device_add_child_ordered() */
122 #ifdef DEVICE_SYSCTLS
123 struct sysctl_oid oid[4];
124 struct sysctl_oid_list oidlist[1];
130 struct device_op_desc {
131 unsigned int offset; /* offset in driver ops */
132 struct method* method; /* internal method implementation */
133 devop_t deflt; /* default implementation */
134 const char* name; /* unique name (for registration) */
137 #endif /* !_SYS_BUS_PRIVATE_H_ */